Path Traversal in Mervinpraison Praisonai
CVE-2026-55540
PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.51, is_path_within_directory() uses os.path.abspath() rather than os.path.realpath() for the workspace boundary. A symlink inside workspace can point outside and still pass the check, allowing read_file and other code tools to access files outside the configured workspace. This issue is fixed in version 4.6.58.
Vulnerability class: Path Traversal (Directory Traversal)
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L.
Affected products
- Mervinpraison Praisonai — versions < 4.6.58
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-55540?
- CVE-2026-55540 is a high-severity vulnerability in Mervinpraison Praisonai, classified under Path Traversal. CVSS score: 7.1/10. Published 2026-08-25.
- How severe is CVE-2026-55540?
- High severity. CVSS v3 base score is 7.1 out of 10.